Packing-ring for pistons.



R. J. TORRANQE. PACKING RING FOR PISTONS.

APPLICATION FILED NOV. 20v 1915.

LQM, 1 99 w Patented. Feb. 11, 1919.

m/vnvron R. J Torrance WI T/VESS nonnn'r J, moniaanon, or names,

' recruits-nineroa rrs'roirs.

nannies.

- Spegifiation of Letters Latent.

t L a "Patented e Application fil pl nbvember so, 1915. Serial N team.

To all whom it may concern Be it known that I, ROBERT J. 'loanAnon, a citizen of the United States, residing at Dallas, in the county of Dallas and State, of Texas, have invented certain new and useful Improvements in Packing-Rings for Pistons, of which the following a specification.

My invention has relation ring for pistons, particularly of the type known as split rings, and in such connection it relates more particularly to the means whereby when the ring is assembled on the piston and in the cylinder the split portion of the ring is transversely e10 ed to prevent leakage therethrough of gases or vapors.

In packing pistons for gas, gasolene or vapor engines, split rings have been used which are permitted to expand slightly un-, 20

der wearandtear. The diliiculty heretofore encountered with rings of this character is that it is almost impossible to prevent leakage throughthe split in the ring, particularly as the ring expands.

It is the main; object of my invention to c'onnectthe split ends of the ring with a stud-like connection which may expand with the ring and yet no matter what position the ends of the ring assume either through Wear or otherwise, the space between the contiguous split'ends of said ring is sealed to prevent passage of gas therethrougli.

To carry out my. invention the split ring has concentric innerand outer peripheries and is relatively wide. In the outer periphery at each split end is cut an elongatetfl groove, the base of which lies along a chord of the circle oi the ring and in the inner periphery below this elongated groove is cut a recess to fit, when the split ends abut, the base of the connecting stud, Each split end is annularly recessed to receive and permit of play of the shank of said'stud.

The nature and scope of my invention will be more fully understood from the following description taken in connection with the accompanying drawings, forming part hereof, in which,

Figural is a plan-viewof a packing ring embodying the tion;

. Fig. 2 is an end elevational View thereof,-

and Fig 3 is a perspective view of the ring and connecting stud separated from each. other.

to a packingspan the split or diagonal openi" the combination oi a main features of my inven- Referring-to the drawings, 1 is the mg ring out diagonally as at 2 to for split ring. .The ring when split is and springs open as shown in assembled on the piston and Within the inder, the ends of the ring abut under sci-i tension and the ring; to all intents and poses is solid. The inner pcriiialiery 3 outer periphery a of the cor tric. In each of the diagonally cut ones of the ring is cut a notch :5 and in he out? periphery of the ring, the split, cut groove 6, the base 7 of which lies :tlo chord of the circle of the ring. The inn periphery at the split ends is cut form a transverse recess 8.

To connect the ends there is prov stud, the head 9 of which is formed l. pletely fill the groove 6 when -1e it: the ring are forced together (stv ,1 the base 10 of said stud fill the i 0 when the ring is closed. ad ba e is extensive in Width with the ring and base, and head of the stud are joined 3'; shank which fits in the notches 5. .When assembled the head of ii" is inclosed between two relatively w grooved portions 11 of the ring and in a groove 6 in such a manner as to coni'plr in ring and the lease l0 likewise close the be. c

of said opening.

The stud may play in the recess and notched ends of the ring; expands and contracts and in varying positions orin case ring to the limit of its expa: 1r forms a complete closure :tor between "he ends of the-ri rangeinent of stud between ti substantial widthlpermits .i .ci i. ofa ring- Whichjs notsuhstantially weale ened atany point.

Having thus described the nature and ohjects of my invention, What I claim as and desire to secure by Letters Patent i 1. In a device of the character oivided ri groove on its convex face suhstant; way between the sides of the ring tending through the ends thereof, the of said ring being under ent to pr shoulders and an insert comprising; or wardly projecting arms to engage said groove and an integral pr laterally beyond. the sides of said coextensive in Width With the width of the ring said base being adapted to be disposed transversely of said ring, beneath said undercut ends, with the shoulders thereon in cooperative relation with the shoulders on said under-cut ends. I

2. In a device of the character described,

a continuous split ringhaving a groove on base extending the entire Width of the ringand fitting in the recess in the concave surface of said ring and a head traversing the ends of the rang and fitting in the groove and base being so constructed as to remain permanently in-the groove and recess of the ring after the ring has worn beyond its normal expansion.

In testimony avhereof I have signed my name to this specification.

ROBERT J. TORRANCE.

of the convex face ofsaid ring, said head- 

